प्रॉनटोसिल ( प्रति जीवाणु ) – McqOptions

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1.	प्रॉनटोसिल ( प्रति जीवाणु ) को किस वर्ष बनाने मे सफलता प्राप्त हुई ?
A.	1928
B.	1926
C.	1934
D.	1932
Answer» E.

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